1, lung and kidney yin deficiency: dry throat, slightly painful and prickly, dry cough with little sputum, or even blood in the sputum, easy to vomit, if there is something blocking in the throat, often with uttering, throat clearing sound, especially at night. Examination reveals a slightly red and swollen pharyngeal cavity, a small amount of granules protruding from the bottom of the pharynx, and dryness with little fluid. It is often accompanied by heat in the hands and feet, soreness and weakness of the waist and knees, insomnia, tinnitus and vertigo, afternoon hot flashes, night sweating, red tongue with thin coating and fine pulse. 2. Liver heat: Swelling and discomfort in the pharynx, obvious foreign body sensation, aggravated by moodiness, accompanied by impatience and irritability, frequent belching, bitter mouth, dry throat, red tongue, yellow moss, and fine pulse. 3.Qi-blood stasis: dry itching and stinging in the pharynx, or burning sensation, light day and night, lingering and difficult to heal, dark red and thickened pharyngeal cavity, protruding particles, or fusion into pieces, accompanied by chest distension and stabbing pain, dark red tongue with stasis, fine and astringent pulse. 4, phlegm and dampness: foreign body sensation in the eyes, such as phlegm blockage, aggravated by empty throat, pharyngeal cavity light red or light white, swelling and thickening, pharyngeal bottom granule hyperplasia such as bead-like, light-colored translucent, phlegm white sticky, greasy coating, smooth pulse.